Shell Programming and Scripting

ls /home >> /root/users.txt
cat /root/users.txt | while read line; do
space=`du -s /home/$line`
echo "$line space is $space"
shift
done

ls /home >> /root/users.txt
mama=`cat /root/users.txt`
while read $mama; do
space=`du -s /home/$mama`
echo "$mama space is $space"
done

while read line; do
     echo $line
done < "Your_Input_File"

mama=`cat /root/users.txt`
while read $mama; do

users=$(ls /home --hide=lost+found)	# This sets all content but 'lost+found' into the list: users
for usr in $users;do			# For each entry (named: usr) in list 'users', do ....
	space=$(du -hsx /home/$usr)	# higly recomend 'x' if you mount other filesystems inside user dirs, 'h' makes it more 'readable'
	echo "$usr space is $space"
done

ls /home --hide=lost+found > /root/users.txt	# Write all content but 'lost+found' into the file: /root/users.txt, using 
while read mama; do				# For each line (named: mama), do ....
	space=`du -s /home/$mama`
	echo "$mama space is $space"
done < /root/users.txt				# while reading from file

andy
bob
celia
denise

while read $mama; do
space=`du -s /home/$mama`
echo "$mama space is $space"
done

while read andy bob celia denise; do
space=`du -s /home/andy
bob
celia
denise`
echo "andy
bob
celia
denise space is $space"
done